<?php

Lib::loadClass('Api_WfsException');
Lib::loadClass('Api_WfsNs');
Lib::loadClass('Request');
Lib::loadClass('Core_AclHelper');
Lib::loadClass('Core_XmlWriter');

class Api_WpsV1_DescribeProcess {

	static function sendDescribeProcessXml($wpsServerUrl, $identifier) {
		header('Content-type: application/xml; charset=utf-8');

		$xmlWriter = new Core_XmlWriter();
		if (!$xmlWriter) throw new HttpException("Error no XMLWriter", 404);
		$xmlWriter->openUri('php://output');
		$xmlWriter->setIndent(true);
		$xmlWriter->startDocument('1.0','UTF-8');
		$xmlWriter->startElement('wps:ProcessDescriptions');
		$xmlWriter->writeAttribute('service', "WPS");
		$xmlWriter->writeAttribute('version', "1.0.0");
		// $xmlWriter->writeAttribute('xml:lang', "en");
		$xmlWriter->writeAttribute('xmlns:xs', 'http://www.w3.org/2001/XMLSchema');
		$xmlWriter->writeAttribute('xmlns:ows', "http://www.opengis.net/ows/1.1");
		$xmlWriter->writeAttribute('xmlns:wps', "http://www.opengis.net/wps/1.0.0");
		$xmlWriter->writeAttribute('xmlns:xlink', "http://www.w3.org/1999/xlink");
		$xmlWriter->writeAttribute('xmlns:xsi', "http://www.w3.org/2001/XMLSchema-instance");
		// $xmlWriter->writeAttribute('xsi:schemaLocation', "http://www.opengis.net/wps/1.0.0 ../wpsGetCapabilities_response.xsd");
		// foreach (Api_WfsNs::getNsList() as $uri => $prefix) {
		// 	$xmlWriter->writeAttribute("xmlns:{$prefix}", $uri);
		// }
		// $schemaLocations = [];
		//$schemaLocations[] = 'http://www.opengis.net/wfs http://webgis.regione.sardegna.it:80/geoserver/schemas/wfs/1.0.0/WFS-capabilities.xsd';// @from http://webgis.regione.sardegna.it/geoserver/ows?service=WFS&request=GetCapabilities
		// if (!empty($schemaLocations)) $xmlWriter->writeAttribute('xsi:schemaLocation', implode(' ', $schemaLocations));
		$wpsProcess = self::getWpsProcess($identifier);
		$xmlWriter->h('ProcessDescription', [
			[ 'ows:Identifier', $wpsProcess->identifier ],
			[ 'ows:Title', $wpsProcess->title ],
			[ 'ows:Abstract', $wpsProcess->description ],
			[ 'DataInputs', array_map(function ($dataInput) {
				return [ 'Input', [ 'maxOccurs' => $dataInput->maxOccurs, 'minOccurs' => $dataInput->minOccurs ], [
					[ 'ows:Identiier', $dataInput->identifier ],
					[ 'ows:Title', $dataInput->title ],
					[ 'ows:Abstract', $dataInput->description ],
					('xml' === $dataInput->type)
					? [ 'ComplexData', [
							[ 'Default', [
								[ 'Format', [
									[ 'MimeType', "text/xml; subtype=gml/3.1.1" ],
								] ],
							] ],
						] ]
					: [
							[ 'LiteralData', [
								[ 'ows:AnyValue' ],
							] ],
						],
				] ];
			}, $wpsProcess->dataInputs) ],
			[ 'ProcessOutputs', [
				[ 'Output', [
					[ 'ows:Identifier', "result" ],
					[ 'ows:Title', "result" ],
					[ 'ComplexOutput', [
						[ 'Default', [
							[ 'Format', [ [ 'MimeType', $wpsProcess->defaultOutput ] ] ],
						] ],
						[ 'Supported', array_map(function ($output) {
							return [ 'Format', [ [ 'MimeType', $output ] ] ];
						}, $wpsProcess->supportedOutput) ],
						// [ 'Supported', [
						// 	[ 'Format', [ [ 'MimeType', "text/xml; subtype=wfs-collection/1.0" ] ] ],
						// 	[ 'Format', [ [ 'MimeType', "text/xml; subtype=wfs-collection/1.1" ] ] ],
						// 	[ 'Format', [ [ 'MimeType', "application/json" ] ] ],
						// 	[ 'Format', [ [ 'MimeType', "application/wfs-collection-1.0" ] ] ],
						// 	[ 'Format', [ [ 'MimeType', "application/wfs-collection-1.1" ] ] ],
						// 	[ 'Format', [ [ 'MimeType', "application/zip" ] ] ],
						// ] ],
					] ],
				] ],
			] ],
		]);

		$xmlWriter->endElement();// wps:ProcessDescriptions
		$xmlWriter->endDocument();
		exit;
	}

	static function getWpsProcess($identifier) { // TODO: get from WPS Process Factory // @return Type_WpsProcess
		$wpsProcess = (object)[
			'identifier' => $identifier,
			'title' => "Title({$identifier})",
			'description' => "Desc($identifier)",
			'maxOccurs' => "1",
			'minOccurs' => "1",
			'dataInputs' => [
				(object)[
					'identifier' => $identifier,
					'title' => $title,
					'description' => $description,
					'type' => 'literal',
				],
			],
			// 'MimeType' => text/xml, 'Encoding' => base64, 'Schema' => http://foo.bar/gml/3.1.0/polygon.xsd
			'defaultOutput' => [ 'MimeType' => "text/xml; subtype=wfs-collection/1.0" ],
			'supportedOutput' => [
				[ 'MimeType' => "text/xml; subtype=wfs-collection/1.0" ],
				[ 'MimeType' => "text/xml; subtype=wfs-collection/1.1" ],
				[ 'MimeType' => "application/json" ],
				[ 'MimeType' => "application/wfs-collection-1.0" ],
				[ 'MimeType' => "application/wfs-collection-1.1" ],
				[ 'MimeType' => "application/zip" ],
			]
		];
		return $wpsProcess;
	}

}